Kenneth Libbrecht is a professor of physics at Caltech.
Libbrecht was originally trained as a solar astronomer, studying under Robert Dicke at Princeton and receiving his PhD in 1984. However, much of his recent research has focused on the properties of ice crystals, particularly the structure of snowflakes. In addition to his professional papers, he has published several popular books illustrating the variety of snowflake forms:
He is a physics Professor at Caltech.
Four of Libbrecht's pictures were selected by the United States Postal Service as designs for stamps for the 2006 winter holiday season, with a total printing of approximately 3 billion stamps [1]. Libbrecht won the 2004 National Outdoor Book Award (Nature and the Environment category) for The Snowflake: Winter's Secret Beauty.
Libbrecht is married to Rachel Wing. They have two children.